Brought a 14 RLX about 5 months ago everything was good until winter time, At first the heat would only work on high so i looked under the hood and coolant was low topped it off in reservoir and it seemed to fix it. Then after that, I noticed passenger side would be cold while drivers side would be blowing out hot air if i turned the passenger dial up it would heat up but it would have to be on 77 and up while drivers side is on 73 blowing hot......now im getting no heat unless its on 80 and when i turn it on 80 i hear some kind of noise. like somethings clicking on..

 

I would suggest you get coolant completely drained and fllushed to insure there is complete flow through total cooling/heater core circuit if it hasn't been done recently. The noise you are hearing is probably the heater baffle door either being inactive due to either some part being blocked by debris or baffle actuator being broken. If that is the case, then I believe significant amount of labor to access the baffle/acuator will be necessary and I would suggest using a Acura dealer to diagnose the issue.

GOod luck...Demosan

 

Thanks for the reply ill make an appt with the dealer..I don't want just anyone dissembling my dash.